arm-soc: mvebu: replace open coded VA->PA conversion

maillist inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8KNA9
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?h=arm-kaslr-latest&id=59dee05a68727a7fc3c62240542f8753797e38d6



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This replaces an open coded calculation to obtain the physical
address of a far symbol with a call to the new ldr_l etc macro.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Felix Fu <fuzhen5@huawei.com>